to cooperate; to collaborate; to work together

suitable; fitting; appropriate

lawful; legitimate; legal

contract; agreement; CL:份[fen4]

rational; reasonable; sensible; fair

to fit; to suit

matching; fitting in with; compatible with; to correspond; to fit; to conform to; rapport; to coordinate with; to act in concert with; to cooperate; to become man and wife; to combine parts of machine

to combine; to join; unite; alliance

in accordance with; to agree with; to conform to; to meet (a requirement); (physics) coincidence

to gather; to assemble; (math.) set